Retinal Artery OcclusionRetinal ArteryRetinal VeinOphthalmic ArteryOphthalmodynamometryArteriesCiliary ArteriesSusac SyndromeFluorescein AngiographyRetinal VesselsUltrasonography, Doppler, ColorRetinal DiseasesPulmonary ArteryFundus OculiRetinal Vein OcclusionBlood Flow VelocityCarotid ArteriesOrbitRenal ArteryCerebral ArteriesRegional Blood FlowFemoral ArteryMesenteric ArteriesCarotid Artery DiseasesCarotid Artery, InternalBasilar ArteryBlindnessAmaurosis FugaxArterial Occlusive DiseasesCarotid Artery, ExternalIntraocular PressureLaser-Doppler FlowmetryGanglionectomyVentricular Function, LeftGlaucoma, NeovascularCoronary Artery BypassIliac ArteryVertebral ArteryVisual AcuityOptic DiskEyeMammary ArteriesRadial ArterySneddon SyndromeSubclavian ArteryBlood PressureMyographyVasodilationVentricular Dysfunction, LeftParacentesisChoroidRetinal NeuronsEye DiseasesCoronary VesselsOptic Neuropathy, IschemicSplenic ArteryRetinaBrachial ArteryVasoconstrictionMethyldopaEisenmenger ComplexCarotid Artery, CommonHepatic ArteryEmbolismMuscle, Smooth, VascularVasodilator AgentsTreatment OutcomeEndothelium, VascularCeliac ArteryProspective StudiesNitroarginineMesenteric Artery, SuperiorRetrospective StudiesHypertrophy, Left VentricularCarotid StenosisFollow-Up StudiesMiddle Cerebral ArteryUmbilical ArteriesThoracic ArteriesOphthalmoscopyRenal Artery ObstructionCoronary AngiographyGlaucoma, Open-AngleTemporal ArteriesMuscle RelaxationGlaucomaBronchial ArteriesFibrinolytic AgentsInjectionsPopliteal ArteryUlnar ArteryVision DisordersOptic NerveElectroretinographyUterine Artery